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渤海的风和温度层结有明显的季节变化 ,因而其环流与输运亦有明显的季节信号。以季节平均的海面气象条件和开边界的潮波系统驱动三维斜压水动力模型———HAMSOM ,模拟了渤海冬、夏季的总环流。渤海环流冬强夏弱 ,表层风漂流常被下层逆风流所补偿。深度平均环流 ,即水柱内的输运 ,流型有显著的季节变化 :冬季在渤海中部沿逆时针方向旋转 ,辽东湾顶有一个顺时针流涡 ,阻碍了湾顶水与外海水的交换 ;夏季则为一个大的贴岸的顺时针流环 ,内嵌许多局地涡旋。这些与渤黄东海海洋水文图集中给出的多年观测的环流基本相同 ,同时也被水文要素分布及耐盐浮游动物的出现所佐证。风的季节变化决定了渤海大部分海区、特别是海峡附近环流的季节变化 ,但辽东湾东岸众多的岬角涡旋却不随季节变化 ,因为它们是由潮波系统与岬角岸型变化的非线性相互作用产生的。
Bohai Sea wind and temperature stratification has obvious seasonal changes, so its circulation and transport also obvious seasonal signal. Based on the seasonal average sea surface weather conditions and the open-boundary tidal wave system, a three-dimensional baroclinic hydrodynamic model (HAMSOM) was driven to simulate the total circulation in winter and summer in the Bohai Sea. The Bohai Sea Circumstances winter and summer and summer weak, surface wind drift often compensated by the reverse wind flow. The depth average circulation, ie, the transport within the water column, has significant seasonal variations in flow patterns: the winter rotates anticlockwise in the central Bohai Sea and a clockwise vortex at the top of Liaodong Bay hinders the exchange of top and bottom seawater; Summer is a large sticking clockwise flow ring, embedded many local vortex. These are basically the same as those observed in many years of observations in the Bohai Sea and East China Sea hydrographic charts, and are also supported by the distribution of hydrological elements and the emergence of salt-tolerant zooplankton. The seasonal variation of wind determines the seasonal variation of circulation around most of the Bohai Sea, especially the strait. However, the volcanic swales of many headlands on the east coast of Liaodong Bay do not change with the seasons because they are caused by the non-linear Generated by the interaction